Which of the following is the correct formula of borax?

1. \(\mathrm{Na}_{2}\left[\mathrm{~B}_{4} \mathrm{O}_{5}(\mathrm{OH})_{4}ight] \cdot 2 \mathrm{H}_{2} \mathrm{O}\)
2. \(\mathrm{Na}_{2}\left[\mathrm{~B}_{4} \mathrm{O}_{5}(\mathrm{OH})_{4}ight] \cdot 4 \mathrm{H}_{2} \mathrm{O}\)
3. \(\mathrm{Na}_{2}\left[\mathrm{~B}_{4} \mathrm{O}_{5}(\mathrm{OH})_{4}ight] \cdot 6 \mathrm{H}_{2} \mathrm{O}\)
4. \(\mathrm{Na}_{2}\left[\mathrm{~B}_{4} \mathrm{O}_{5}(\mathrm{OH})_{4}ight] \cdot 8 \mathrm{H}_{2} \mathrm{O}\)

Solution

Asked in: JEE-TOPICTESTS-CHEMISTRY

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